Proximity sensor with adaptive threshold

    公开(公告)号:US20050146499A1

    公开(公告)日:2005-07-07

    申请号:US11055658

    申请日:2005-02-11

    摘要: A proximity sensor measures receptor output with an energy source deactivated. The sensor then measures receptor output with the energy source activated. The measurements with the energy source activated are compared to the measurements with the energy source deactivated to compensate for the effect of ambient conditions. A near condition is recognized if the change between the two groups of measurements exceeds a designated value. To compensate for receptor output that may decrease after reaching a peak value during approach of an object, a near condition can be maintained until the change between the two groups of measurements no longer exceeds a different designated value. Multiple sensors can be used to avoid false near conditions caused by, e.g., placing a device equipped with the sensors next to a stationary object. In one embodiment, a sensor comprises an infrared light emitting diode and a phototransistor.

    Proximity sensor with adaptive threshold

    公开(公告)号:US20050200603A1

    公开(公告)日:2005-09-15

    申请号:US11055650

    申请日:2005-02-11

    摘要: A proximity sensor measures receptor output with an energy source deactivated. The sensor then measures receptor output with the energy source activated. The measurements with the energy source activated are compared to the measurements with the energy source deactivated to compensate for the effect of ambient conditions. A near condition is recognized if the change between the two groups of measurements exceeds a designated value. To compensate for receptor output that may decrease after reaching a peak value during approach of an object, a near condition can be maintained until the change between the two groups of measurements no longer exceeds a different designated value. Multiple sensors can be used to avoid false near conditions caused by, e.g., placing a device equipped with the sensors next to a stationary object. In one embodiment, a sensor comprises an infrared light emitting diode and a phototransistor.

    Dynamically adjusting operation of one or more sensors of a computer input device
    3.
    发明申请
    Dynamically adjusting operation of one or more sensors of a computer input device 有权
    动态调整计算机输入装置的一个或多个传感器的操作

    公开(公告)号:US20050190158A1

    公开(公告)日:2005-09-01

    申请号:US10788444

    申请日:2004-03-01

    IPC分类号: G09G5/08

    CPC分类号: G06F3/0383 G06F3/0317

    摘要: A computer input device controller dynamically adjusts the rate at which an illumination source is activated, and may also adjust the rate at which other optical tracking system components are activated. As the velocity of optical tracking system movement relative to a tracked surface increases, the controller increases the activation rate(s). As the velocity of relative movement decreases, the controller decreases the activation rate(s). Future displacements of a tracking system relative to a tracked surface are also estimated. In particular, relative tracking system/tracked surface velocity is calculated based on a series of images. Relative displacement is then estimated based on the calculated velocity.

    摘要翻译: 计算机输入设备控制器动态地调节照明源被激活的速率,并且还可以调整激活其他光学跟踪系统组件的速率。 随着光学跟踪系统相对于跟踪表面移动的速度增加,控制器增加激活速率。 随着相对运动速度的降低,控制器降低了激活速率。 还估计跟踪系统相对于被跟踪表面的未来位移。 特别地,基于一系列图像来计算相对跟踪系统/跟踪表面速度。 然后基于计算的速度来估计相对位移。

    Method and apparatus for detecting the type of interface to which a peripheral device is connected
    4.
    发明申请
    Method and apparatus for detecting the type of interface to which a peripheral device is connected 有权
    用于检测外围设备连接到的接口类型的方法和装置

    公开(公告)号:US20050076171A1

    公开(公告)日:2005-04-07

    申请号:US10850564

    申请日:2004-05-20

    CPC分类号: G06F13/4068 G06F13/4086

    摘要: A peripheral device is connectable to a computer having one of a first interface and a second interface. The first interface communicates with the peripheral device over a differential data connection having a first data conductor and a second data conductor. The second interface communicates with the peripheral device over a clock conductor and a single ended data connection which includes a data conductor. The peripheral device has first and second communication conductors configured for connection to the first and second data conductors in the differential data connection when the computer includes the first interface and is configured for connection to the first data conductor in the single ended data connection and the clock conductor when the computer is provided with the second interface. The peripheral device includes an interface detection component coupled to the first and second communication conductors and configured to detect which of the first and second interfaces the peripheral device is connected to. The peripheral device also includes a controller component configured to communicate between the peripheral device according to a protocol corresponding to the detected interface.

    摘要翻译: 外围设备可连接到具有第一接口和第二接口之一的计算机。 第一接口通过具有第一数据导体和第二数据导体的差分数据连接与外围设备进行通信。 第二接口通过时钟导体和包括数据导体的单端数据连接与外围设备进行通信。 外围设备具有第一和第二通信导体,当计算机包括第一接口并被配置为连接到单端数据连接中的第一数据导体和时钟时,配置用于在差分数据连接中连接到第一和第二数据导体 当计算机配备有第二接口时, 外围设备包括耦合到第一和第二通信导体并被配置为检测外围设备连接到的第一和第二接口中的哪一个的接口检测组件。 外围设备还包括控制器组件,其被配置为根据与检测到的接口对应的协议在外围设备之间进行通信。

    Capacitive sensing employing a repeatable offset charge
    5.
    发明申请
    Capacitive sensing employing a repeatable offset charge 失效
    使用可重复偏移电荷的电容感测

    公开(公告)号:US20050240785A1

    公开(公告)日:2005-10-27

    申请号:US11169739

    申请日:2005-06-30

    摘要: Capacitive proximity sensing is carried out by detecting a relative change in the capacitance of a “scoop” capacitor formed by a conductor and a surrounding ground plane. Charge is transferred between the “scoop” capacitor and a relatively large “bucket” capacitor, and a voltage of the bucket capacitor is applied to an input threshold switch. A state transition (e.g., from low to high, or high to low) of the input threshold switch is detected and a value (TouchVal) indicative of a number of cycles of charge transfer required to reach the state transition is determined. The presence or absence of an object or body portion in close proximity to or contact with a device can be determined by comparing TouchVal with a predetermined threshold value (TouchOff). In order to lessen the time required for detection, and/or improve the sensitivity thereof, the bucket capacitor may initially be charged to a repeatable non-zero reference level closer to the charge level that will cause a state transition. TouchOff can be adjusted to take into account environmentally induced (non-touch related) changes in the capacitance of the scoop capacitor. Power management may be provided in a user operated data input device utilizing the inventive proximity sensing.

    摘要翻译: 通过检测由导体和周围地平面形成的“勺”电容器的电容的相对变化来进行电容接近感测。 在“勺”电容器和相对较大的“桶”电容器之间传送电荷,并且将桶式电容器的电压施加到输入阈值开关。 检测输入阈值开关的状态转换(例如,从低到高或高到低),并且确定指示达到状态转换所需的电荷转移周期数的值(TouchVal)。 可以通过将TouchVal与预定阈值(TouchOff)进行比较来确定与设备紧密接触或接触的物体或身体部分的存在或不存在。 为了减少检测所需的时间和/或提高其灵敏度,桶式电容器可以最初被充电到更接近导致状态转换的充电电平的可重复非零参考电平。 可以调整TouchOff以考虑到勺式电容器的电容的环境诱导(非触摸相关)变化。 可以在利用本发明的接近感测的用户操作的数据输入装置中提供电源管理。

    Touch screen having reduced sensitivity to spurious selections
    6.
    发明授权
    Touch screen having reduced sensitivity to spurious selections 失效
    触摸屏具有降低对伪选择的灵敏度

    公开(公告)号:US5515083A

    公开(公告)日:1996-05-07

    申请号:US198046

    申请日:1994-02-17

    IPC分类号: G06F3/033 G06F3/042 G09G5/00

    CPC分类号: G06F3/0421

    摘要: A touch screen assembly including a molded cover and base is described. A mounting board is sandwiched between the cover and the base and supports a plurality of LEDs and detectors. Cylindrical guides corresponding to each of the LEDs and detectors are formed in the base when the base and cover are attached. The guides at the LEDs limit beam spreading and guides at the detectors prevent off-axis light from being detected. Support pedestals formed in the base, together with the cylindrical guides help align and support the LEDs and detectors to prevent misalignment and problems associated with fatigue. The cover is attached to the base by catch hooks which may be reached without disassembly of the CRT. Access to the mounting board is thereby facilitated.

    摘要翻译: 描述了包括模制盖和底座的触摸屏组件。 安装板被夹在盖和基座之间并且支撑多个LED和检测器。 当安装基座和盖子时,在基座中形成与每个LED和检测器相对应的圆柱形引导件。 LED指示灯限制光束扩散和检测器引导,防止检测到离轴光。 形成在基座上的支撑座与圆柱形引导件一起帮助对准和支撑LED和检测器,以防止不对准和与疲劳相关的问题。 盖子通过卡扣钩连接到基座上,可以在不拆卸CRT的情况下到达底座。 从而便于进入安装板。

    Capacitive sensing and data input device power management
    7.
    发明申请
    Capacitive sensing and data input device power management 失效
    电容式传感和数据输入设备电源管理

    公开(公告)号:US20050168438A1

    公开(公告)日:2005-08-04

    申请号:US10981617

    申请日:2004-11-05

    摘要: Capacitive proximity sensing is carried out by detecting a relative change in the capacitance of a “scoop” capacitor formed by a conductor and a surrounding ground plane. The conductor may be a plate provided in the form of an adhesive label printed with conductive ink. Charge is transferred between the “scoop” capacitor and a relatively large “bucket” capacitor, and a voltage of the bucket capacitor is applied to an input threshold switch. A state transition (e.g., from low to high, or high to low) of the input threshold switch is detected and a value (TouchVal) indicative of a number of cycles of charge transfer required to reach the state transition is determined. The presence or absence of an object or body portion in close proximity to or contact with a device can be determined by comparing TouchVal with a predetermined threshold value (TouchOff). TouchOff can be adjusted to take into account environmentally induced (non-touch related) changes in the capacitance of the scoop capacitor. Power management is provided in a user operated data input device utilizing proximity sensing and switching between three or more power states. Switching between the power states occurs based upon the presence or absence of input activity, and an operation instrumentality (e.g., a hand) in close proximity to or contact with the device. In an optical surface tracking cursor control device embodiment, switching to and from a BEACON state, which provides a reduced flash rate of a surface illuminating light source, is carried out based upon a detected presence or absence of a trackable surface.

    摘要翻译: 通过检测由导体和周围地平面形成的“勺”电容器的电容的相对变化来进行电容接近感测。 导体可以是以印刷有导电油墨的粘合剂标签的形式提供的板。 在“勺”电容器和相对较大的“桶”电容器之间传送电荷,并且将桶式电容器的电压施加到输入阈值开关。 检测输入阈值开关的状态转换(例如,从低到高或高到低),并且确定指示达到状态转换所需的电荷转移周期数的值(TouchVal)。 可以通过将TouchVal与预定阈值(TouchOff)进行比较来确定与设备紧密接触或接触的物体或身体部分的存在或不存在。 可以调整TouchOff以考虑到勺式电容器的电容的环境诱导(非触摸相关)变化。 在用户操作的数据输入设备中提供电源管理,利用接近感测和三个或多个功率状态之间的切换。 基于输入活动的存在或不存在以及与设备紧密接触或接触的操作手段(例如,手),在功率状态之间进行切换。 在光学表面跟踪光标控制装置实施例中,基于检测到的可跟踪表面的存在或不存在,执行提供表面照明光源的降低的闪光速率的BEACON状态切换和切换。

    Data input device power management including beacon state
    8.
    发明申请
    Data input device power management including beacon state 失效
    数据输入设备电源管理包括信标状态

    公开(公告)号:US20050078085A1

    公开(公告)日:2005-04-14

    申请号:US10981631

    申请日:2004-11-05

    摘要: Power management is provided in a user operated data input device utilizing proximity sensing and switching between three or more power states. Switching between the power states occurs based upon the presence or absence of input activity, and an operation instrumentality (e.g., a hand) in close proximity to or contact with the device. Capacitive proximity sensing is carried out be detecting a relative change in the capacitance of a “scoop” capacitor formed by a conductor and a surrounding ground plane. In an optical surface tracking cursor control device embodiment, switching to and from a BEACON state, which provides a reduced flash rate of a surface illuminating light source, is carried out based upon a detected presence or absence of a trackable surface.

    摘要翻译: 在用户操作的数据输入设备中提供电源管理,利用接近感测和三个或多个功率状态之间的切换。 基于输入活动的存在或不存在以及与设备紧密接触或接触的操作手段(例如,手),在功率状态之间进行切换。 进行电容式接近感测是检测由导体和周围接地层形成的“勺”电容器的电容的相对变化。 在光学表面跟踪光标控制装置实施例中,基于检测到的可跟踪表面的存在或不存在,执行提供表面照明光源的降低的闪光速率的BEACON状态切换和切换。